Product Description
Backup Rings
- Size#156 = 4-1/4 ID x 4-7/16 OD x 3/32 CS
- Back-up rings are used in conjunction with O-ring for both static and dynamic sealing applications. They prevent extrusion of the O-ring when it is subjected to high pressures, or when the extrusion gaps are excessive. Wherever possible two Back-up rings should be used, one on each side of the O-ring. Temperature range -58 F to 248 F with intermittent service to 600 F. Color Black
- 90 Durometer hardness
- Price is $0.54 each minimum purchase 2 pcs
